Results 21 to 30 of about 5,196 (283)

Robustness of Grounded-Electrode Approach to Mitigate Bearing Currents in Electric Machines with Semi-Closed Slots

Electric motors are integral to diverse industrial applications, yet their reliability is hampered by bearing currents-a parasitic phenomenon causing excess wear and damage to the machine's bearings.
Konstantin Vostrov, Ilya Petrov, Juha Pyrhonen   +2 more
exaly   +2 more sources

Influence of Electric Discharges on Bearings of Electric Machines [PDF]

Advances in Electrical and Electronic Engineering, 2006
I the last time many articles were found out discussed about shaft voltage, bearing currents and their influence on lifetime and reliability of electric machines bearings.
Karel Chmelik, Vaclav Cech, Jiri Foldyna
doaj   +1 more source

Measuring Electric Contact in an Axial Ball Bearing at DC Current Flow

IEEE Transactions on Industry Applications, 2023
Bearing currents induced in electrical motors, driven with fast switching power electronic inverters, can lead to bearing surface damages on the raceway. In this paper the electrical contact in the bearing is studied.
Safdarzadeh, Omid, Andreas Binder, Weicker, Martin, Martin Weicker, Omid Safdarzadeh, Binder, Andreas   +5 more
core   +2 more sources

Common-Mode Choke Design to Eliminate Electrostatic Discharge Machining Bearing Currents in Wide-Bandgap Inverter-Fed Motor Drives

Energies
The electrification of mobility sectors, including automotive, aerospace, and robotics, has accelerated the need for compact and high-efficiency power converters in electric motor drives. Wide-bandgap (WBG) semiconductor–based inverters offer significant
Mustafa Memon, Mohamed Diab
doaj   +2 more sources

Experimental Assessment of High Frequency Bearing Currents in an Induction Motor Driven by a SiC Inverter

IEEE Access, 2021
Compared with silicon (Si) IGBTs, silicon carbide (SiC) MOSFETs have much faster switching speeds and high switching frequency operation capability, enabling compact and high-efficiency motor drive systems.
Yipu Xu, Yan Liang, Xibo Yuan, Xiaojie Wu, Yan Li   +4 more
doaj   +1 more source

The Influence of Load and Speed on the Initial Breakdown of Rolling Bearings Exposed to Electrical Currents

Lubricants, 2023
The reason for the failure of electric vehicle drives is increasingly current-induced damage to rolling bearings. Studies show that rolling bearings are more susceptible to current pass-through after the first occurrence of unwanted bearing currents.
Steffen Puchtler, Robert Maier, Martin Kuhn, Yves Burkhardt   +3 more
doaj   +1 more source

Electrical Bearing Damage, A Problem in the Nano- and Macro-Range

Lubricants, 2022
Rolling bearings face different damaging effects: Besides mechanical effects, current-induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing interest to understand the differences leading to known electrical damage ...
Volker Schneider, Cara Behrendt, Pauline Höltje, Daniel Cornel, Florian Michael Becker-Dombrowsky, Steffen Puchtler, Francisco Gutiérrez Guzmán, Bernd Ponick, Georg Jacobs, Eckhard Kirchner   +9 more
doaj   +1 more source

A Common-Mode Shorting Network to Reduce Common-Mode Excitation of Three-Phase Two-Level Electric Drives

IEEE Open Access Journal of Power and Energy, 2023
Common-mode voltage and current in an electric machine are undesirable. Although the strategic placement of a common-mode inductor and dc input side capacitors may reduce the common-mode current produced by an electric drive system, the effectiveness of ...
Harshita Singh, Scott D. Sudhoff
doaj   +1 more source

Influence of Parasitic Electric Currents on an Exemplary Mineral-Oil-Based Lubricant and the Raceway Surfaces of Thrust Bearings

Lubricants, 2023
Within this paper, electro-mechanical long-term tests on a thrust bearing were presented. The effects of an additional electrical load on the bearing raceways and the used lubricant were investigated.
Simon Graf, Oliver Koch, Bernd Sauer
doaj   +1 more source

Performance of common-mode chokes [PDF]

, 2010
A low-cost method for experimental investigation of common-mode chokes for reducing high-frequency motor ground-currents of inverter-based drive systems of several hundred kW is presented.
Heng, Bee See, Muetze, Annette
core   +1 more source